hollowness Synonyms

insincerity falseness uselessness vainness vacuum vacuousness vacuity vacancy unreality trough triviality space recessed recess vanity vincibility void unconvincingness empty space desertedness bootlessness unprofitableness pointlessness purposelessness aimlessness fruitlessness meaninglessness hopelessness worthlessness pit nothingness nihility falsehood fake emptiness dip desolation depression concavity concaveness cavity blankness blank barrenness falsity flimsiness inefficacy ineffectuality ineffectiveness indentation